<div id="soform" style="text-align: center;float: none"><br><br>
    <input tabindex="2" class="homesoin" id="sos" name="key" type="text" placeholder="输入你要观看的视频" value="">
    <button id="button" tabindex="3" class="homesobtn" type="button"><i class="fa">观看</i></button>